Review of metazoan parasites of the northern fur seal (Callorhinus ursinus) and the analysis of the gastrointestinal helminth community of the population on St. Paul Island, Alaska

0554240 - BC 2022 RIV DE eng J - Journal Article
Kuzmina, T.A. - Kuzmin, Y. - Dzeverin, I. - Lisitsyna, O. - Spraker, T.R. - Korol, E.M. - Kuchta, Roman
Review of metazoan parasites of the northern fur seal (Callorhinus ursinus) and the analysis of the gastrointestinal helminth community of the population on St. Paul Island, Alaska.
Parasitology Research. Roč. 120, č. 1 (2021), s. 117-132. ISSN 0932-0113. E-ISSN 1432-1955
Institutional support: RVO:60077344
Keywords : hookworms uncinaria-lucasi * odendhali nematoda-filarioidea * pribilof islands * prevalence * acanthocephalans * mortality * anisakis * linnaeus * stomachs * ecology * Acanthocephala * Cestoda * Nematoda * Trematoda * Marine mammals * Parasite community
OECD category: Parasitology
Impact factor: 2.383, year: 2021
Method of publishing: Limited access
https://link.springer.com/article/10.1007/s00436-020-06935-6

The northern fur seal (NFS), Callorhinus ursinus (Mammalia: Otariidae), is a marine mammal species included into the IUCN Red List as the vulnerable species which population is dramatically declining. A significant amount of parasitological data collected previously and our recent data allowed us to clarify the list of NFS metazoan parasites and to perform a comprehensive analysis of the gastrointestinal helminth community. Gastrointestinal tracts from 756 NFSs (3- to 4-year-old males) were collected during the annual Aleut subsistence harvests in July-August of 2011-2014 from five separate rookeries on St. Paul Island, Alaska. Totally, 27,625 specimens of helminths and approximately 1000 nasal mites were collected and identified. Detailed analysis of the previously published and newly obtained data revealed 32 species of metazoan parasites, including trematodes (6 species), cestodes (4), nematodes (9), acanthocephalans (9) and arthropods (4). The gastrointestinal helminth community of newly studied NFSs comprised 19 species including trematodes (4), cestodes (3), nematodes (5) and acanthocephalans (7). Temporal changes in the helminth community structure were small but statistically significant. Gastrointestinal helminth infracommunities comprised from 1 to 10 species (average of 4). Small but significant correlation was found between the abundances of acanthocephalans (Corynosoma similis and C. strumosum), nematodes (Contracaecum osculatum, Pseudoterranova spp.) and cestode Diphyllobothrium tetrapterum.
Permanent Link: http://hdl.handle.net/11104/0328858